All the names originally graced the interior of the first Macintosh release (128k), but according to Andy Hertzfeld, some names were lost over time due to revisions of the case design on subsequent models. You might notice that some of the signatures present on the original signing sheet are missing on the Plus. Soon afterward, Jobs had the signatures engraved into the Macintosh case mold, with an obvious result: Apple permanently impressed the team’s autographs into the plastic case of every Mac that rolled off the production line. At the urging of Jobs, the Mac design group held a small party on February 10th, 1982, during which they ate cake, drank champagne, and took turns signing their names onto a large piece of paper (see image, right). As such, it was only fitting for the renegade band of Apple developers to sign their work. In crafting the original Macintosh, Steve Jobs viewed himself and his team as artists. And if you’re the owner of a Mac 128k, 512k, or Plus, he signed yours too. Steve Jobs, the CEO of Apple, Inc., signed my Macintosh.

Apple mac plus computer